A coagulation-flocculation method is a popular approach for treating wastewater from pulp and paper mills. This process involves using coagulants and flocculants to remove impurities from the water. By causing particles to clump together, the impurities become easier to remove through sedimentation or filtration.
Several studies have been conducted to determine the best approach for treating wastewater using the coagulation-flocculation method. Different factors were taken into consideration, such as the type and dose of coagulant and flocculant, the pH of the water, and the settling characteristics of the particles.
Two common coagulants used in the process are an alum and polyaluminum chloride (PACl). Nine different polyacrylamides with varying molecular weights and charge densities were chosen as flocculants. These were tested to determine the best option for improving treatment efficiency.
Overall, the coagulation-flocculation method is an effective approach for treating wastewater from pulp and paper mills. By choosing the right type and dose of coagulants and flocculants, and adjusting the pH of the water, treatment efficiency can be optimized and the water can be made cleaner and clearer.
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